Vintage Silver-Tone Adjustable Cloisonné Enamel Rose Ring

This is a vintage adjustable ring featuring an oval-shaped center cabochon decorated with enamel in the cloisonné or champlevé tradition. The central motif consists of a stylized pink rosebud framed by two green leaves against a vibrant cobalt blue background with a visible guilloché-style textured pattern underneath the enamel. The cabochon is secured in a decorative silver-tone scalloped or petal-edged bezel setting. The band is a split-shoulder design that transitions into a simple bypass adjustable shank, allowing it to fit multiple finger sizes. Based on the construction and metal finish, it appears to be a mid-20th-century costume jewelry piece, likely silver-plated or made of a nickel-based base metal. The condition shows moderate wear and surface patination consistent with age; there is visible tarnishing on the inner band and slight dulling of the metal's luster. The enamel remains mostly intact, though fine surface scratches are visible under close inspection. Its craftsmanship suggests mass production, common in souvenir or boutique jewelry from the 1950s to 1970s.